Most common malignancy of vulva is –
Squamous cell carcinoma (SCC) is the most common. I remember that SCC accounts for about 90% of all vulvar cancers. It's important to distinguish this from melanoma, which is less common but more aggressive. Bartholin's gland carcinoma is rare, and other types are even rarer.
Now, the question is why the other options are incorrect. Let's think about the options. If the options were A. Squamous cell carcinoma, B. Melanoma, C. Bartholin's gland carcinoma, D. Adenocarcinoma, then the correct answer is A. The other options are less common. Melanoma is the second most common, but still much less than SCC. Bartholin's gland carcinoma is rare, and adenocarcinoma might refer to other types like endometrioid, but again not common here.
Clinical pearl: Remember that SCC is associated with HPV in some cases, especially in younger patients. Also, the presentation might be a painless mass or ulceration. For exams, the key is to know the frequency order: SCC > melanoma > Bartholin's > others.
Wait, I should check if there's any other type that might be more common. No, SCC is definitely the main one. So the correct answer is Squamous cell carcinoma. The explanation needs to highlight the prevalence, maybe mention the percentage, and differentiate from other types. Also, the clinical pearl should be a high-yield fact, maybe a mnemonic like "SCC is the queen of vulvar malignancies" or something. But I need to keep it accurate. Also, note that in older women, SCC is more common, while melanoma is more common in younger women. Hmm, not sure if that's accurate. Maybe better to stick with the prevalence numbers.
**Core Concept**
The most common vulvar malignancy is **squamous cell carcinoma (SCC)**, accounting for ~90% of cases. It arises from squamous epithelium and is associated with human papillomavirus (HPV) in younger patients, while older patients often present with human papillomavirus-negative disease.
**Why the Correct Answer is Right**
Squamous cell carcinoma of the vulva is the most prevalent type, characterized by transformation of normal squamous epithelium into malignant cells. Risk factors include chronic inflammatory conditions (e.g., lichen sclerosus), HPV infection (types 16/18), and immunosuppression. Clinically, it presents as a painless ulcer, nodule, or mass, often with lymph node metastasis. Histologically, it shows keratinizing or non-keratinizing squamous differentiation.
**Why Each Wrong Option is Incorrect**
**Option B: Melanoma** — Vulvar melanoma is the second most common (5–10% of cases), but less frequent than SCC. It arises from melanocytes and has a worse prognosis due to late detection.
**Option C